The opposite of photosynthesis is respiration, What is produced by the point pla

Question

The opposite of photosynthesis is respiration, What is produced by the point plant during respiration? A. carbon dioxide, carbohydrates B. water, carbon dioxide C. carbon dioxide, oxygen D. oxygen, carbohydrates Which of the following type of water-based receives most of its energy from the moon? A. Wave B. Tidal C. Hydroelectric D. All of these E. None of the these Electricity is transmitted from power plants at high voltage for. A. safety B. reducing losses in transmission C. reducing losses in distribution D. high power According to the USDA, the energy used to produce ethanol from corn is the energy output of the ethanol created. A. more than B. the same as C. less than D. This is not clearly determined. A card with a mass of 50 kg, initially at rest, is pushed with a force of 80 N for 5 m. What is its final kinetic energy? A. 4,000 J B. 640 J C. 400 J D. 6.25 J In a co-firing power plant, biomass is mixed with coal before combustion. This is done to. A. increase the temperature of the combustion reaction B. decrease the formation of carbon dioxide wastes C. decrease the cost of the electricity produced. D. increase the energy density of the fuel

Explanation / Answer

Q5) B

Equation for respiration

C6H12O6 + 6O2 ---------> 6 CO2 + 6H2O

Q6) D (all three are same)

Q7) B

Electricity is transmitted through wires ,cables . Therefore there will be loss through heat , so to reduce these transmissions losses electricity is transmitted at low current and high voltage

Q8) C

Ratio is 2:1

Q9) C

Change in work done = kinetic energy of the cart

Force × distance = 80 × 5 = 400j

Q10) B

Mixing of biomass with coal is called cofiring

It helps in fossil fuel substitution and reduce CO2 Emissions

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